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(No Model.) 2 Sheets-Sheet; 1. J. PINTSOH.

GAS LANTERN FOR RAILWAY CARS, &c. No. 280,761. Patented July 3, 1883.

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J. PINTSUH.

GAS LANTERN FOR RAILWAY CARS, m. "No: 280,761. Patented July 3, 1883.

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UNTTED STATES PATENT OFFIcE.

JULIUS PINTSOH, or BERLIN, PRUSSIA, GERMANY.

GAS-LANTERN FOR RAILWAY-CARS, 80C.

SPECIFICATION forming part of Letters Patent No. 280,761, dated July 3, 1883.

' Application filed January 12, 1883. (No model.)

To all whom/ i1; may concern.-

Be it known that I, JULIUs PINTSOH, a subject of the King of Prussia, residing at Berlin,

Prussia, German Empire, have invented certain new and useful Improvements in Gas- Lanterns for Railway-Oars and other Purposes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure 1 represents a vertical central section of my improved gas-lantern for railwaycars. Figs. 2, 3, .4, 5, and 6 are vertical sections of modifications thereof. Fig. 7 is a horizontal section on the line a c, Fig. 6.

This invention relates to certain improvements on the lantern described in Letters Patent No. 268,373, of November 28, 1882; and it consists more particularly in the employment of a horizontal perforated diaphragm in the class of lanterns described in said patent, which diaphragm causes the air that is fed to the flame to be preheated to such an extent as to produce the greatest attainable illuminating effeet in the flame.

In Fig. 1 is shown avertic'al section of alan tern containing this improvement, the other figures showing modifications. Thus the reflector A, Fig. 1, is protected against contact with the atmosphere by a glass bowl, B, within which the burner G, of suitable construction, is contained. From the reflector extends upward the chimney D, which is either atruncated cone, open at both ends, or a cylinder, and may have a smooth or corrugated or ribbed surface. E is a metallic plate or diaphragm surrounding the chimney D and resting on an upwardly-proj ecting rib, a, or other projection or projections of the reflector. In this diaphragm E is a central opening around the chimney D, which opening is indicated at b in Fig. 1, through which opening theair that passes to the flame must find its way. On the lefthand side of the chimney D in Fig. 1 is shown the same opening, b, but, in addition thereto, is also indicated an upright wall, d, which surrounds the chimney D and forms a sort of a flue, through which the air must pass on its way to the burner. The air travels in the direction indicated by the arrows, andis brought into contact with the heated surface of the chimney D, and with that of the plate E and oi the reflector, thus becoming sufficiently heated for the purpose above mentioned.

In Fig. 2 is shown a construction of the lamp which would correspond with that indicated on the right-hand side of the chimney in Fig. 1.

In Fig. 3 is shown a modification, which consists in extending the wall d upward only from the plateE. This annular wall d is of course of the same diameter as the opening I) in the plate E, and by means of such an outer cylinder, d, the capacity of the apparatus for properly heating the air is increased. In Fig. 4 this cylinder (1 is shown to extend downward from the plate E. In Fig. 5 it is shown to project upward, as in Fig. 3; but Fig. 5 differs from Fig. 3,in that the space between the upper end of the cylinder (1 and the chimney D is closed by a horizontal annular plate, 6, the air being obliged to find its wayinto the space between these two parts d andD through holes in the cylinder d. Fig. 6 shows the arrangement of Fig. 2 on an enlarged scale. For

the purpose of increasing the effect, a glass cylinder, f, (shown in Fig. 1,) may be suspended from the reflector A around the burn er 0.

In railroad-lanterns having gas -pipes G, which conduct the gas to the burner Gin the bowl B, between the same and the reflector A, the reflector must have a slot or aperture, 71, near its periphery, through which the bent pipe G extends downward, as indicated in Fig. 6. In order to prevent the air from passing downward through this slot or aperture h, I extend the rib a, upon which the plate E rests, around this slot, as indicated by dotted lines in Fig. 7, and although the plate E has also a slot, 2', in it, as indicated in Fig. '7, corresponding to the slot in the reflector, yet-these apertures or slots hi are closed by a tongue, g, that extends under the slot of the plate E from the shell H of the lantern, as shown in section in Fig. 6, said tongue being of the form of the slot in the plate E and in the reflector beneath, so as to prevent the direct passage of air through these slots, obliging the said air therefore to find its way to the burner below through the aperture 1) of the plate E.

The construction of lantern hereinabove i11- dieated has the specific advantage that it furnishes to the burner air highly heated in regular currents without causing sudden or uneven gusts. The result is a steadily-burning flame having the highest illuminating-power. The invention is applicable to railway-lanterns as well as to other lanterns or illuminating apparatus.

It will be seen that in all the forms of my invention the diaphragm E is entirely below the upper part of the chimney, and where the cylinder (1 is employed that, too, does not extend up as far as the chimney. The diaphragm E and chimney d are made of sheet metal, to be good conductors of heat, so that they will begin to preheat the air that is in contact with the upper face of the diaphragm and with the outer face of the cylinder (1.

I do not claim and could not use with any show of advantage a diaphragm and cylinder made of non-conducting material.

I cla-im 1. In a lantern which is closed at the bottom, the inner sheet -metal heatconducting dia phragm, E, held between two strata of air above the reflector A, and provided with a perforation, 21, around the chimney D, that passes through said diaphragm, substantially as described, for the purpose of heating the air that is above said diaphragm, as specified.

2. In combination with the reflector A and lower bowl, B, of a lantern, the interior horizontal heat-conductin g sheet-metal diaphragm E, having central aperture, the chimney D, and the outer sheet-metal cylinder, (1, which is entirely below the top of said chimney, and an outer shell or casing admitting air to the top of said diaphragm, and to the outer side of said cylinder d, substantially as herein shown and described.

3. In combination with the bowl l3 and reflector A of alantern, the perforated diaphragm E, chimney D, and suspended glass cylinder f, substantially as described.

4. The combination of the annular reflector A, having rib a on its upper face, with the an nular diaphragm E, resting on said rib, gaspipe G, and with the tongue r on the shell H of the lantern, on which shell the reflector Av is supported, substantially as and for the pur pose described.

In testimony whereof I aflix my signature in presence of two witnesses.

' JULIUS llNlSOH.

\Vitnesses: I

G. Lounnm, B. ROI. 

